bootstrapserver.java

java1.6众多例子参考

/*
 * @(#)BootstrapServer.java	1.6 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.corba.se.internal.CosNaming;

import java.util.Enumeration;
import java.util.Properties;

import java.io.File;
import java.io.FileInputStream;

import com.sun.corba.se.spi.orb.ORB ;

import com.sun.corba.se.spi.resolver.Resolver ;
import com.sun.corba.se.spi.resolver.LocalResolver ;
import com.sun.corba.se.spi.resolver.ResolverDefault ;

import com.sun.corba.se.impl.orbutil.CorbaResourceUtil;
import com.sun.corba.se.impl.orbutil.ORBConstants;

/**
 * Class BootstrapServer is the main entry point for the bootstrap server
 * implementation.  The BootstrapServer makes all object references
 * defined in a configurable file available using the old
 * naming bootstrap protocol.
 */
public class BootstrapServer
{
    private ORB orb;

     /**
     * Main startup routine for the bootstrap server.
     * It first determines the port on which to listen, checks that the
     * specified file is available, and then creates the resolver 
     * that will be used to service the requests in the 
     * BootstrapServerRequestDispatcher.
     * @param args the command-line arguments to the main program.
     */
    public static final void main(String[] args)
    {
	String propertiesFilename = null;
	int initialPort = ORBConstants.DEFAULT_INITIAL_PORT;

	// Process arguments
	for (int i=0;i<args.length;i++) {
	    // Look for the filename
	    if (args[i].equals("-InitialServicesFile") && i < args.length -1) {
		propertiesFilename = args[i+1];
	    }

	    // Was the initial port specified? If so, override
	    // This property normally is applied for the client side
	    // configuration of resolvers.  Here we are using it to
	    // define the server port that the with which the resolvers
	    // communicate.
	    if (args[i].equals("-ORBInitialPort") && i < args.length-1) {
		initialPort = java.lang.Integer.parseInt(args[i+1]);
	    }
	}

	if (propertiesFilename == null) {
	    System.out.println( CorbaResourceUtil.getText("bootstrap.usage", 
		"BootstrapServer"));
	    return;
	}

	// Create a file
	File file = new File(propertiesFilename);

	// Verify that if it exists, it is readable
	if (file.exists() == true && file.canRead() == false) {
	    System.err.println(CorbaResourceUtil.getText(
		"bootstrap.filenotreadable", file.getAbsolutePath()));
	    return;
	}

	// Success: start up
	System.out.println(CorbaResourceUtil.getText(
	    "bootstrap.success", Integer.toString(initialPort), 
	    file.getAbsolutePath()));

	Properties props = new Properties() ;

	// Use the SERVER_PORT to create an Acceptor using the
	// old legacy code in ORBConfiguratorImpl.  When (if?)
	// the legacy support is removed, this code will need
	// to create an Acceptor directly.
	props.put( ORBConstants.SERVER_PORT_PROPERTY,  
	    Integer.toString( initialPort ) ) ;

	ORB orb = (ORB) org.omg.CORBA.ORB.init(args,props);

	LocalResolver lres = orb.getLocalResolver() ;
	Resolver fres = ResolverDefault.makeFileResolver( orb, file ) ;
	Resolver cres = ResolverDefault.makeCompositeResolver( fres, lres ) ;
	LocalResolver sres = ResolverDefault.makeSplitLocalResolver( cres, lres ) ;

	orb.setLocalResolver( sres ) ;

	try {
	    // This causes the acceptors to start listening.
	    orb.resolve_initial_references(ORBConstants.ROOT_POA_NAME);
	} catch (org.omg.CORBA.ORBPackage.InvalidName e) {
	    RuntimeException rte = new RuntimeException("This should not happen");
	    rte.initCause(e);
	    throw rte;
	}

	orb.run() ;
    }
}